Looks like its going to be tough getting under 20 lbs. as you've done a great job so far.
At your weight and for snow riding you could look at Sapim Superspokes. I have a wheelset built with them and so far so good. (not a Fatbike )
Tune Speedneedle saddle is light at 87 grams, still has a leather cover which is nice for winter riding and the saddle does have alot of flex which I find makes it comfy.
I would go Powercordz prime housing with Powercordz cable or I-Links and Powercordz cable. I wouldn't run PC cable with Mini I-Links.
I'm really happy with Kettle's carbon brake pads for the SFL rotors - great stopping power and there only 8 grams for the set = XTR 985.

My total bike weight was with the lighter Northpaws with Dillingers which makes a huge diff in weight right there. Looks like I'm gonna be 21lbs or a hair under unless I drop my suspension.

I went with the Surly site stock weight on the Holy RD's 700g each. I weighed but lost paper and forget. RD's are at my machinist/engineer to get every gram I can outta there. A shop showed me a 30g drop drilling the odd spoke holes out that were not being used. In comparison, I should be a for sure 150g each off and hopefully a little more. I will get pics when I get them back, before and after anodizing. Huge cuts and many side profile holes.

It's all the little bits that add up and I think I am close to on track. I had a +38lb Necro TANK last year. I rode it so much last winter, I figured I earned this one.

Never heard of the Superspokes. Always ran CX-Ray. I see the they are about 40g lighter. Nice!

Hard to change the saddle. That Tune is crazy lite and scary..yikes. Teknologika just seems to fit and feel right. Every other saddle has always hurt. I prefer the flow but I have both on 2 bikes and 1 already for the fat.

I will have to weigh in the Formula organics. Google-ing I am seein 20.4g 2 pads.

Those rims sure look sweet, tubeless ready and at 590g/ 85mm... very nice but at $1500 they are outta of my budget this year.

My Darryls should really come in between 630-650g if I am correct (so not too far off the carbondales) but then I have tape and more tape for a good seal. Hoping to get away without going ghetto which will pain me.

Northpaws are 120g each so huge weight savings in comparison but narrow with less float. Easy tubeless conversion.

Dropping my suspension puts under the mark forsure. Borealis fork at 575g uncut is crazy light but I gotta do my Fat Look Fournales at 1578g. It was magic when I put them on last year for longer funner rides. Gonna try and knock some weight off with the drill here too.

This is MAAAD science

So the dream now is weight drops for TLO post -40g, Superspokes -40g, rims -140g, housing -30g, fork unknown, brake pads unknown. That puts me at sub 20 lbs. These are still going to be a give and take when true weights come in and I still have to add skewers/tape/spacers and misc.

I will start getting picks when everything starts coming together. Frame should be any day. New 6 paw hubs are delayed till Dec 5th. So I'm itchin hard utilizing this time for cold hard calculating, hoping and customizing.

Thanks for the reassurance guys! I usually push the limits of safety in everything without worry but was really curious on this one after looking at them.

Frame shows tomorrow or next and I will get a true weigh in before and after paint. I have always loved the Smokey & the Bandit and Smokey Yunick's gold/black theme but I think I am gonna love old school bmx, chrome (Alsa Killer Chrome) with black letters. Anno red wheels and hubs.

Yes, you are correct Silentfoe and thanks for pointing that out. I should include what I can for least surprise on outcome and that was overlooked. I will not cheat either with lighter parts to just weigh in. Just stuff as I will ride it.

I did pretty honest guesstimates overall I believe but some will weigh more, some under. I will do a full sheet on true weigh in when I have it all and cross my fingers for my goal.

A functioning tubeless setup is gonna make or break me I think. Not the end of the world but for my goal. If Borealis can make one at 21.09lbs, I should be able to beat it.

They win at saddle, tires, lack of pedals and def the fork for sure . I win with bars, stem, housings and rotors which are no significant but yes with the rims.

FYI QBP lists this at 545 grams w/o the ring. Add about 55g for the ring.

Let me give you the inside line on your FB build. We offer two FB spindle lengths both using the same 100mm BB (one for 170mm rears and one for 190mm rears). That said, our DM ring is reversible resulting in a 7mm outboard chainline shift.

Long story short, you will get a 75mm chainline (great for 1X setups with 190 rears) if you use a 170mm spindle and reverse mount the ring on your Yampa. Doing so with also reduce the Q-factor from 222 to 202 and drop some weight.

With all those holes reminds me of filmstrip. I hope do something like flip book with tape.

Yes that is a great idea! I was looking through the cut out thread and someone suggested it there too. I think it should, could and quite possibly be done really cool. I'll really have to rack my brain for a sweet 32 clip continuous story, even if it's just a stick man.

Maybe a guy running in the front one and a horde of zombies in the rear chasing him. just came to me...who knows

Thanks for the root jakomonster. 11 days (Dec 5th) till the new Borealis 6 paw hubs are released.... fingers crossed. This gives me a little tinker time for weight droppin and paint sloppin, weeeell a mist to keep the weight down.

Where are you getting 120 grams per rim for those northpaws? The listed weight on their website is 550 and they state that their rims are up to 120 grams lighter than many lighter 65mm wide options. So unless you where able to butcher out over 350 grams from those rims I have a hard time believing that kind of weight.

Thanks TigWorld. I have the 170mm Next SLs comin (any friggin day now son of a... it's dumpin a sweet 15cm tonight rant) with spiderless chainring (585g). It's lighter than running spider and XX1 ring, bolts.

Very cool having cranksets interchangeable and I am surprised more companies don't do it. I read in that thread someones RaceFace SLs arms were 1g lighter than Hollowgram Si.

Well great news, my Yampa frame came today. Weighs in 1314g with the internal routing which I am scared to take out cause I'm gonna need to use them to run my brake hoses and shift cable thru there. But they will come out.

I gave Borealis a call and Greg answered a couple questions.

Leave those routing cables to assist in routing your new cables cause it will be a nightmare doing this without them. There is no entrance for fingers rear of toptube, in the seattube area.

Hubs look like they are coming in 2nd week of December Shyt!

Looks like I'm renting a muk for a couple weeks. Off to the painter I go.

Yup and with so little weight to push around one gear is plenty! I am pushing around a 31 pound steel beast on 65's and 4.0's right now for snow riding in anchorage and must say it isn't as bad as I thought it was going to be. Gearing is 32-22 at the moment and for off road riding near perfect or as perfect as a single speed can be. Definitely learning to conserve speed and use the brakes less.

I really don't understand ss. Talking summer riding, I'm a real fast climber on long steeps and use granny but on flats I need a higher gear to push the bike faster. I can't even imagine one gear being low enough for me to get up a steep hill and then spinning crazy revs on flats just to have high speed. And there's no pedaling downhill I guess with single speed? In races, I pedal till I'm done.

Mother just dumped some 25cm of sweet snow today. Muk is rented for 2mrrw. Bike is getting prepped for paint and is ready in 2 weeks... just before my hubs come in.